Year Percent of GDP (Units) 1995 41.290 1996 36.895 1997 40.818 1998 37.086 1999 25.849 2000 35.465 2001 36.676 2002 37.882 2003 38.881 2004 41.618 2005 44.194 2006 44.587 2007 43.658 2008 47.113 2009 48.623 2010 49.150 2011 45.700 2012 48.972 2013 48.110 2014 44.774 2015 43.043 2016 40.785 2017 41.646 2018 41.918 2019 41.490 2020 45.600 2021 40.488 2022 66.000 2023 74.908 2024 57.304 2025 48.879 2026 45.431 2027 44.728 2028 43.644 2029 43.034